PYQ NEET- Chemistry Of Main Group Elements

2016:

The correct answer is (D). Kr has the highest boiling point among the noble gases because it has the highest atomic number and therefore the strongest London dispersion forces.

2017:

The correct answer is (C). Fluorine is the most electronegative element because it has the smallest atomic radius and therefore the highest effective nuclear charge.

2018:

The correct answer is (A). The electronegativity of an element is determined by its atomic number and its electron configuration. Fluorine has the highest electronegativity because it has the smallest atomic radius and therefore the highest effective nuclear charge.